Alienware 13 r2 turns on and off then repeats

Nov 9, 2018
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Alienware 13 r2 wont boot, with no video. When turning on system from either battery or AC, alienware logo and keyboard lights up, fans turn off, and then all turn off after about a second. This continues until power source is removed (battery cable unplugged or AC adapter unplugged). Tried 2 minutes of power drain, resetting cmos with screwdriver with battery unplugged and plugged in and all sorts of combinations.
 
Thermal issues typically throttle a great deal before shutdown. However, if something is wrong there and throttling isn't enough, shutdown is the last resort to save the CPU. Have you tried removing and reseating any hardware as of yet? Could be a possible power related issues/short somewhere and the system is cutting power to try and protect itself. One thing at a time to narrow things down.